Pumps A and B

Pump A fills the tank for 12 minutes, and pump B for 24 minutes. How long will it take to fill the tank if he is only three minutes work A and then both pumps A and B?

Correct answer:

x =  9 min

Step-by-step explanation:

1/12 x + 1/24 (x-3) = 1

1/12·x + 1/24·(x-3) = 1

3x = 27

x = 27/3 = 9

x = 9

Our simple equation calculator calculates it.

Did you find an error or inaccuracy? Feel free to write us. Thank you!

Tips for related online calculators
Do you have a linear equation or system of equations and looking for its solution? Or do you have a quadratic equation?
Do you want to convert time units like minutes to seconds?

You need to know the following knowledge to solve this word math problem:

Units of physical quantities:

Themes, topics:

Grade of the word problem:

Related math problems and questions: